code: def register(self, request_header_provider):
      self._registry.append(request_header_provider())
  
file_path: mlflow/mlflow/tracking/request_header/registry.py
imports: import logging
  import warnings
  import entrypoints
  from mlflow.tracking.request_header.databricks_request_header_provider import DatabricksRequestHeaderProvider
  from mlflow.tracking.request_header.default_request_header_provider import DefaultRequestHeaderProvider
label_desc: Use image node_id 2 for calling the RequestHeaderProviderRegistry obj's underlying member method code with example usage: obj.register(request_header_provider) without return types